import { Injectable } from '@angular/core'
+import { buildVideoLink } from '../../../assets/player/utils'
+import { HtmlRendererService } from '@app/shared/renderer/html-renderer.service'
+import * as MarkdownIt from 'markdown-it'
-import { MarkdownIt } from 'markdown-it'
+type MarkdownParsers = {
+ textMarkdownIt: MarkdownIt
+ textWithHTMLMarkdownIt: MarkdownIt
+
+ enhancedMarkdownIt: MarkdownIt
+ enhancedWithHTMLMarkdownIt: MarkdownIt
+
+ completeMarkdownIt: MarkdownIt
+}
+
+type MarkdownConfig = {
+ rules: string[]
+ html: boolean
+ escape?: boolean
+}
+
+type MarkdownParserConfigs = {
+ [id in keyof MarkdownParsers]: MarkdownConfig
+}
@Injectable()
export class MarkdownService {
'newline',
'list'
]
+ static TEXT_WITH_HTML_RULES = MarkdownService.TEXT_RULES.concat([ 'html_inline', 'html_block' ])
+
static ENHANCED_RULES = MarkdownService.TEXT_RULES.concat([ 'image' ])
- static COMPLETE_RULES = MarkdownService.ENHANCED_RULES.concat([ 'block', 'inline', 'heading', 'html_inline', 'html_block', 'paragraph' ])
+ static ENHANCED_WITH_HTML_RULES = MarkdownService.TEXT_WITH_HTML_RULES.concat([ 'image' ])
- private textMarkdownIt: MarkdownIt
- private enhancedMarkdownIt: MarkdownIt
- private completeMarkdownIt: MarkdownIt
+ static COMPLETE_RULES = MarkdownService.ENHANCED_WITH_HTML_RULES.concat([ 'block', 'inline', 'heading', 'paragraph' ])
- async textMarkdownToHTML (markdown: string) {
- if (!markdown) return ''
+ private markdownParsers: MarkdownParsers = {
+ textMarkdownIt: null,
+ textWithHTMLMarkdownIt: null,
+ enhancedMarkdownIt: null,
+ enhancedWithHTMLMarkdownIt: null,
+ completeMarkdownIt: null
+ }
+ private parsersConfig: MarkdownParserConfigs = {
+ textMarkdownIt: { rules: MarkdownService.TEXT_RULES, html: false },
+ textWithHTMLMarkdownIt: { rules: MarkdownService.TEXT_WITH_HTML_RULES, html: true, escape: true },
- if (!this.textMarkdownIt) {
- this.textMarkdownIt = await this.createMarkdownIt(MarkdownService.TEXT_RULES)
- }
+ enhancedMarkdownIt: { rules: MarkdownService.ENHANCED_RULES, html: false },
+ enhancedWithHTMLMarkdownIt: { rules: MarkdownService.ENHANCED_WITH_HTML_RULES, html: true, escape: true },
- const html = this.textMarkdownIt.render(markdown)
- return this.avoidTruncatedTags(html)
+ completeMarkdownIt: { rules: MarkdownService.COMPLETE_RULES, html: true }
}
- async enhancedMarkdownToHTML (markdown: string) {
- if (!markdown) return ''
+ constructor (private htmlRenderer: HtmlRendererService) {}
- if (!this.enhancedMarkdownIt) {
- this.enhancedMarkdownIt = await this.createMarkdownIt(MarkdownService.ENHANCED_RULES)
- }
+ textMarkdownToHTML (markdown: string, withHtml = false) {
+ if (withHtml) return this.render('textWithHTMLMarkdownIt', markdown)
+
+ return this.render('textMarkdownIt', markdown)
+ }
+
+ enhancedMarkdownToHTML (markdown: string, withHtml = false) {
+ if (withHtml) return this.render('enhancedWithHTMLMarkdownIt', markdown)
+
+ return this.render('enhancedMarkdownIt', markdown)
+ }
- const html = this.enhancedMarkdownIt.render(markdown)
- return this.avoidTruncatedTags(html)
+ completeMarkdownToHTML (markdown: string) {
+ return this.render('completeMarkdownIt', markdown)
}
- async completeMarkdownToHTML (markdown: string) {
+ async processVideoTimestamps (html: string) {
+ return html.replace(/((\d{1,2}):)?(\d{1,2}):(\d{1,2})/g, function (str, _, h, m, s) {
+ const t = (3600 * +(h || 0)) + (60 * +(m || 0)) + (+(s || 0))
+ const url = buildVideoLink({ startTime: t })
+ return `<a class="video-timestamp" href="${url}">${str}</a>`
+ })
+ }
+
+ private async render (name: keyof MarkdownParsers, markdown: string) {
if (!markdown) return ''
- if (!this.completeMarkdownIt) {
- this.completeMarkdownIt = await this.createMarkdownIt(MarkdownService.COMPLETE_RULES, true)
+ const config = this.parsersConfig[ name ]
+ if (!this.markdownParsers[ name ]) {
+ this.markdownParsers[ name ] = await this.createMarkdownIt(config)
}
- const html = this.completeMarkdownIt.render(markdown)
- return this.avoidTruncatedTags(html)
+ let html = this.markdownParsers[ name ].render(markdown)
+ html = this.avoidTruncatedTags(html)
+
+ if (config.escape) return this.htmlRenderer.toSafeHtml(html)
+
+ return html
}
- private async createMarkdownIt (rules: string[], html = false) {
- // FIXME: import('...') returns a struct module, containing a "default" field corresponding to our sanitizeHtml function
+ private async createMarkdownIt (config: MarkdownConfig) {
+ // FIXME: import('...') returns a struct module, containing a "default" field
const MarkdownItClass: typeof import ('markdown-it') = (await import('markdown-it') as any).default
- const markdownIt = new MarkdownItClass('zero', { linkify: true, breaks: true, html })
+ const markdownIt = new MarkdownItClass('zero', { linkify: true, breaks: true, html: config.html })
- for (const rule of rules) {
+ for (const rule of config.rules) {
markdownIt.enable(rule)
}
private avoidTruncatedTags (html: string) {
return html.replace(/\*\*?([^*]+)$/, '$1')
.replace(/<a[^>]+>([^<]+)<\/a>\s*...((<\/p>)|(<\/li>)|(<\/strong>))?$/mi, '$1...')
- .replace(/\[[^\]]+\]?\(?([^\)]+)$/, '$1')
-
+ .replace(/\[[^\]]+\]\(([^\)]+)$/m, '$1')
+ .replace(/\s?\[[^\]]+\]?[.]{3}<\/p>$/m, '...</p>')
}
}